After entering the position, did u chk the chart and found that at some stage market had proven u wrong (when it clearly brokeout from 2800 level).
1) You shd have taken the loss then.
2) Atleast now, decide the level at which u will say that market is going further up. It is overbought now and logically, prices should retrace to 38% or 50% of the move. So you can live with the pain but keep monitoring closely for the level that will tell u that market has again started going up.
Don't hesitate to Close the position (before broker closes it due to margin call)
3) Stop trading leverage instrument like futures and options and LERAN TRADING FIRST. Understand that you are playing against some of the best brain and some of the smartest traders here. So learn the rules of the game and take small steps in right direction before u start running the marathon.
Happy Trading.